When a spoke is adjusted by turning the nipple from outside the rim. if tightening the spoke, it will inevitably protrude further into the rim. This in turn is likely to damage the seal. Also, just by turning the nipple, if the seal is stuck to the inside of the nipple, again damage may occur.
What type of tool or method prevents that happening? Or, is it just luck?
I think the outer spoke adjuster operated by the spoke key is an integral part of the inner spoke nut shown in my pic Doug. Consequently it's this larger object that twists inside the rim whilst the threaded spoke stays still. Since the sealant is well attached to this inner nut as it's applied, even the smallest twisting action breaks through the thick layer of same leaving a clean twirling split on the outside to identify, so some good news
I cannot see therefore if there is any method of adjustment with this spoke style on a tubeless rim without disturbing sealant. It's always going to be sealant removal then long prep followed by a couple of tubes of sealant if you have messed with multiple spokes when trueing. There are YouTube videos illustrating the job.
